NULL pointer dereference in Gnupg
CVE-2026-24883
In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (40.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2026/01/27/8 (Mailing List, Third Party Advisory)
- dev.gnupg.org/T8049 (Product, Patch)
Frequently asked questions
- What is CVE-2026-24883?
- CVE-2026-24883 is a low-severity vulnerability in Gnupg, classified under NULL Pointer Dereference. CVSS score: 3.7/10. Published 2026-01-27.
- How severe is CVE-2026-24883?
- Low severity. CVSS v3 base score is 3.7 out of 10.